Polytropic Urban 20 heat pump

Developed by French brand Polytropic for the rapid heating of spas, small pools and above-ground pools (up to 20 m³), the Urban heat pump is compact, economical, quiet (34 dB(A) at 10 m) and easy to use.

Its installation is simple: fitted with a plug and circuit breaker, the Urban is compatible with all spas and plugs directly into a conventional electrical outlet. An intelligent electronic monitor - completely independent of your control system and spa keypad - then manages your heating preferences.

Tubs Parts recommendation: ideal when the air temperature is above 0°C, the Urban 20 is a great solution for spas used all year round in temperate regions, and if you do not use your spa in the winter in colder regions. If you're looking for a heat pump that works even when the air temperature drops below 0°C, we recommend the Stepio.

Electrical specifications
Input Supply: 230 V, 50 Hz
Max. power input (air 26°C): 0.8 kW
Rated current: 4.0 A
Max. current: 7 A
Protection and cable size (for 20 m): 10A (3G 2,5 mm²)

Mechanical specifications
Operating temperature: 0°C to 43°C
Compressor: Rotary (Toshiba)
Refrigerant: R32
Weight: 23,8 kg
Min. flow rate: 1,5 m³/h or 25 litres/mn
Sound pressure at 10m: 34 dB(A)

Dimensions
Length : 438 mm
Height : 375 mm
Depth: 295 mm

Performances

Ambient temperatures	Power output	Coefficient of Performance (COP)
26°C	4,3 kW	5,2
15°C	3,1 kW	4,4
7°C	2,4 kW	2,5

Connections
The Urban 20 comes with two hose clamps, two splined adapters for 32mm and 50mm hoses and a black plastic end cap for 16mm hoses.

The heat pump must be installed on the circulation pump circuit with a bypass kit (sold separately) with 3 valves to adjust the flow of water passing through the Urban 20 as well as for maintenance purposes.

The feet are easily adjustable to ensure the heat pump is level.

Connecting the power cable
Equipped with a standard electrical plug (80 cm cable length) and circuit breaker, the Urban 20 heat pump plugs directly into a standard wall socket without the need for a mechanical room.

Installation
Set the desired temperature on the heat pump and start your spa circulation pump by setting it for 24 hours. Set your spa to 'Eco' or 'Rest' mode with the temperature set to the lowest setting. Your spa's heater will then only be activated if the water temperature is too low (e.g. when filling until the water has reached the temperature set on the keypad).

Please do not hesitate to contact us if you have any questions about installing your heat pump.

Warranty
2-year Tubs Parts warranty

Part numbers
Polytropic: Urban 20, MHP03-K5